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GB2153619B - Image processing apparatus - Google Patents

Image processing apparatus

Info

Publication number
GB2153619B
GB2153619B GB08432299A GB8432299A GB2153619B GB 2153619 B GB2153619 B GB 2153619B GB 08432299 A GB08432299 A GB 08432299A GB 8432299 A GB8432299 A GB 8432299A GB 2153619 B GB2153619 B GB 2153619B
Authority
GB
United Kingdom
Prior art keywords
processing apparatus
image processing
image
processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08432299A
Other languages
English (en)
Other versions
GB8432299D0 (en
GB2153619A (en
Inventor
Hiroshi Tanioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP58244164A external-priority patent/JPS60136478A/ja
Priority claimed from JP58244163A external-priority patent/JPS60136477A/ja
Priority claimed from JP58244162A external-priority patent/JPS60136476A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB8432299D0 publication Critical patent/GB8432299D0/en
Publication of GB2153619A publication Critical patent/GB2153619A/en
Application granted granted Critical
Publication of GB2153619B publication Critical patent/GB2153619B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
GB08432299A 1983-12-26 1984-12-20 Image processing apparatus Expired GB2153619B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58244164A JPS60136478A (ja) 1983-12-26 1983-12-26 画調識別方法
JP58244163A JPS60136477A (ja) 1983-12-26 1983-12-26 画調識別方法
JP58244162A JPS60136476A (ja) 1983-12-26 1983-12-26 画像処理装置

Publications (3)

Publication Number Publication Date
GB8432299D0 GB8432299D0 (en) 1985-01-30
GB2153619A GB2153619A (en) 1985-08-21
GB2153619B true GB2153619B (en) 1988-01-20

Family

ID=27333211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08432299A Expired GB2153619B (en) 1983-12-26 1984-12-20 Image processing apparatus

Country Status (3)

Country Link
US (1) US5018024A (de)
DE (1) DE3446880A1 (de)
GB (1) GB2153619B (de)

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JP3359390B2 (ja) * 1993-09-27 2002-12-24 株式会社リコー 空間フィルタ装置
US5592572A (en) * 1993-11-05 1997-01-07 The United States Of America As Represented By The Department Of Health And Human Services Automated portrait/landscape mode detection on a binary image
US6549656B1 (en) * 1993-11-29 2003-04-15 Xerox Corporation Fuzzy image segmentation
JP3636332B2 (ja) * 1993-12-24 2005-04-06 セイコーエプソン株式会社 画像処理方法および画像処理装置
US5704021A (en) * 1994-01-27 1997-12-30 Hewlett-Packard Company Adaptive color rendering by an inkjet printer based on object type
DE69524651T2 (de) * 1994-01-27 2002-06-13 Hewlett-Packard Co.(A Delaware Corporation), Palo Alto Drucksystem und -methode
US5592298A (en) * 1994-06-03 1997-01-07 Xerox Corporation Apparatus and method for detecting digitized image area coverage by counting pixels
KR960001927A (ko) * 1994-06-30 1996-01-26 김광호 상역식별장치
US6389163B1 (en) * 1994-11-18 2002-05-14 Xerox Corporation Method and apparatus for automatic image segmentation using template matching filters
US5745596A (en) * 1995-05-01 1998-04-28 Xerox Corporation Method and apparatus for performing text/image segmentation
JPH09135358A (ja) * 1995-11-08 1997-05-20 Nec Corp 算術符号を用いた画像符号化装置
US5852678A (en) * 1996-05-30 1998-12-22 Xerox Corporation Detection and rendering of text in tinted areas
JPH1084475A (ja) * 1996-09-09 1998-03-31 Sharp Corp 画像領域判別方法および画像処理装置
JP3841494B2 (ja) * 1996-09-24 2006-11-01 シャープ株式会社 画像処理装置
US5767978A (en) * 1997-01-21 1998-06-16 Xerox Corporation Image segmentation system
JPH10271331A (ja) * 1997-03-26 1998-10-09 Oki Data:Kk 画像処理方法及びその装置
JP3891654B2 (ja) 1997-08-20 2007-03-14 株式会社東芝 画像形成装置
US6411741B1 (en) 1998-01-14 2002-06-25 Kabushiki Kaisha Toshiba Image processing apparatus
US6529629B2 (en) * 1998-09-23 2003-03-04 Xerox Corporation Image segmentation apparatus and method
US6272240B1 (en) * 1998-09-23 2001-08-07 Xerox Corporation Image segmentation apparatus and method
US6185336B1 (en) * 1998-09-23 2001-02-06 Xerox Corporation Method and system for classifying a halftone pixel based on noise injected halftone frequency estimation
US6552824B2 (en) * 1998-12-17 2003-04-22 Eastman Kodak Company Method of processing pixels with binary or multibit error diffusion
US6810155B1 (en) 1999-01-08 2004-10-26 Macronix International Co., Ltd. Method and apparatus for scaling an image with locally selected interpolation functions
DE19919624C2 (de) * 1999-04-29 2001-03-01 Oce Printing Systems Gmbh Verfahren, System und Computerprogramm zum Komprimieren und Übertragen von Bildrasterdaten
JP3823933B2 (ja) * 2003-03-07 2006-09-20 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置
JP2005094740A (ja) * 2003-08-08 2005-04-07 Ricoh Co Ltd 画像処理装置、画像形成装置及び画像処理方法
JP4118886B2 (ja) * 2005-01-21 2008-07-16 シャープ株式会社 画像処理装置、画像形成装置、画像読取処理装置、画像処理方法、画像処理プログラムおよびコンピュータ読み取り可能な記録媒体
JP4137890B2 (ja) * 2005-01-21 2008-08-20 シャープ株式会社 画像処理装置、画像形成装置、画像読取処理装置、画像処理方法、画像処理プログラムおよびコンピュータ読み取り可能な記録媒体
JP2008009318A (ja) * 2006-06-30 2008-01-17 Toshiba Corp 画像処理装置および画像処理方法
US8055102B1 (en) * 2006-11-08 2011-11-08 Marvell International Ltd. Local edge count heuristic for vector interpolator
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Also Published As

Publication number Publication date
GB8432299D0 (en) 1985-01-30
DE3446880A1 (de) 1985-07-11
GB2153619A (en) 1985-08-21
US5018024A (en) 1991-05-21
DE3446880C2 (de) 1990-10-04

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20041219